The thymus: General concepts on embryology, anatomy, histology and immunohistochemistry.

A fundamental aspect that is commonly overlook when assessing thymic tumors is the normal histology and immunohistochemical features of the normal thymus. Given the fact that most epithelial tumors occur in the adult population, it is only rarely that we are confronted with assessing normal immunohistochemistry of the thymus. However, we consider that such knowledge is of utmost importance is assessing pathological conditions including...